Fastener fastening tool



FIG. 1 is a top and rear perspective view of a fastener fastening tool embodying my new design;

FIG. 2 is a bottom and front perspective view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a rear elevation view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines in the drawings illustrate portions of the fastener fastening tool that form no part of the claimed design. The dash-dot broken lines in the drawings define the boundaries of the claim. 

CLAIM The ornamental design for a fastener fastening tool, as shown and described. 